GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: viperjsy on 09 May 2016, 04:08

Title: blue smoke on idel
Post by: viperjsy on 09 May 2016, 04:08

hi some times when I am at the lights there is blue smoke coming out the exhaust but not on start up could it be turbo is on the way out or valve stem seals how to I check if it is the valve stems do I take the plugs out and see how thay look

Title: Re: blue smoke on idel
Post by: Dalo Harkin on 09 May 2016, 08:27

Its probably building up in the exhaust and your only noticing when stood still.

does it happen everytime you stop? what exhaust you got?

To check if its the turbo, pop one of the boost pipes off and see if there is a lot of oil in the pipe (but if it was the turbo then you would always have blue smoke)

Title: Re: blue smoke on idel
Post by: viperjsy on 09 May 2016, 15:40

I have this exhaust cat back with decat no not all the tame. and it dose not smoke on start up

(http://i1282.photobucket.com/albums/a534/veklor/20160110_124352_zpsxhrdkt0z.jpg) (http://s1282.photobucket.com/user/veklor/media/20160110_124352_zpsxhrdkt0z.jpg.html)

Title: Re: blue smoke on idel
Post by: lemski on 09 May 2016, 18:50

Check boost pipe for oil. Sounds like turbo seals.

Title: Re: blue smoke on idel
Post by: lemski on 09 May 2016, 18:53

If its stem seals be aware that the exhaust valves generally have to be changed. The machine place I use told me tgis with a s3 head I recently took in. They said to me around 500 to skim. Pressure test. Swap valve stem seals and put new valves in. Including valves.
They also deal with badger 5s headwork and said that bill sinks a fair bit into each head